Signal-transmitter



(NoMadeL) W. H. DAVIS 8: H. 0. GHRIS TY.

SIGNAL TRANSMITTER. No. 546,228. Patented Sept. 10, 1895.

4 a i/ I WITNESSES: lure/V702;

W 'I f 4% fi fil BY- W ATTORNEYS.

UNrrn STATES YVILLIE IIOSEA' DAVIS AND HUGH C ICERO CIIRISTY, OF COMO,COLORADO.

ATENT Fries,

SIGNAL-TRANSMITTER.

SPECIFICATION forming; part of Letters Patent No. 546,228, datedSeptember 10, 1895.

Application filed June 3, 1895. Serial No. 551,514. (No model.)

To aZZ "whom, it may concern.-

Be itknown that we, WILL-In Hosea DAVIS and HUGH CICERO CHRISTY, ofComo, in the county of Park and State of Colorado, have invented a newand Improved Signal-Transmitter, of which the following is a full,clear, and exact description.

The object of our invention is to provide apparatus for transmittingelectrical signals to be recorded at a distant point, the inventionbeing designed more particularly for use in connection withmeteorological instruments--a weather vane, for example.

Our invention consists in a helical cam attached to the moving shaft, alever adapted to engage the cam, a device for lifting the lever over thestep from the lower to the higher part of the cam, a revoluble drumcarrying contactsurfaces representing different signals, acontaot-pointpressing upon the revoluble drum, and electricalconnections and recording mechanism, all as will be hereinafter morefully described.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in both the views.

Figure 1 is a perspective view showing the application of ourimprovement to a weathervane; and Fig. 2 is a plan view of the same,showing a recording-instrument connected with the device.

The weather-vane shaft A is supported in bearings in the usual way, andupon the shaft, at any convenient point in the length thereof, ismounted a helical cam B, with its working face extending from theshoulder a to a point 7) directly above this shoulder. In a forkedstandard C, attached to a fixed support, is pivoted an angled lever D,carrying upon its shorter arm a shoe 0, which rests upon the face of thecam B. The longer arm of the lever D is perforated to receive the pin(Z, passing through the forked end of the connecting-rod e and throughthe lever D. The opposite end of the eonnecting-rod e is pivotallyconnected with the shorter arm of a contact-lever E, the longer arm ofwhich rests upon the revoluble drum F. The lever E is fulcruined on thestandard f, projecting from the base g, and the said lever is guided bya slotted guide h attached to the base g. The shaft c of the revolubledrum F is jourualed in suitable supports-and carries a pulleyj, which isdriven by a belt It, taking its motion from any continuously-revolvingshaft.

To the cam 13, at a point about ninety dcgrees distant from the shouldera, is secured a toe Z, and in the forked standard m attached to the baseof the apparatus is pivoted a rightangled lever G, the shorter arm ofwhich is notched for engagement by the toe Z, and the longer arm of thelever G is curved and its extremity is inserted in a hole in the shorterarm of. the lever D. The toe Z is attached to a plate n, which is helddown normally in contact with the top of the cam B by means of a springn, (which, in the present case, consists of asmall block of rubber,) thesaid rubber spring being pressed by a crossbar 0, held in place byscrews entering the top of the cam 13. The longer arm of the lever D isprovided with a retractile spring 29,

A telegraph-recorder H, located at a distant station, is connected bythe wires q r with the transmitting apparatus, the wire g being connected with the contact-lever E and the wire r being connected with onepole of the battery I, the other pole of the battery being connectedelectrically with the drum F. The said drum F is preferably made ofmetal and provided with insulation at its periphery, which is cut awayat points where an electrical contact is desired. In the present casethe drum carries on its periphery contacts which are used in sendingsignals representing North, South, East,- and West, and as manyintermediate divisions of the compass as may be desired. The signals onopposite edges of the drum are the same, so that when the contact-arm istransferred from one edge to the other in the manner presently to bedescribed it will indicate correctly the point of compass.

The operation of our improved apparatus is as follows; As the shaft A isoscillated or revolved by the action of the wind on the weather-vane,the cam 13 moves the shorter arm of the lever D up or down, according tothe direction of the wind. When the deeper portion of the cam rides pastthe shoe 0 on the shorter arm of the lever D, the said shoe ICO is madeto move to the higher portion 1) of the cam by the retractile spring 19,attached to the lever D. iVhen the shaft A revolves in the oppositedirection and the shoe 0 approaches the shoulder a, the tool engages thenotched end of the shorter arm of the lever G and swings the said leveron its pivot, thereby carrying the shoe 0 down below the shoulder a,allowing the shoulder to pass, thus bringing the shoe into engagementwith the deep portion of the cam. The movement of the lever D thusproduced swings the lever E, thereby bringing its free end intoelectrical contact with the c0ntact-surfaces on the drum .F. The circuitthus being closed, the recorder H is actuated and a record of theposition of the vane on the shaft A is made.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- 1. In a signal apparatus, the combination of acam, an angle lever actuated thereby, a toe on the cam,an angle leverconnected to the first angle lever and actuated by the toe, a revolvingdrum, a contact arm connected to the angle levers, and electricalconnections, substantially as described.

2. The combination of a cam,atoe thereon, an angle lever operating onthe face of the cam, a second angle lever having one arm pivotallyconnected to the first angle lever and having its remaining arm actuatedby the toe of the cam, a revolving drum,a contact arm, a link connectingthe drum and angle levers, and electrical connections, substantially asdescribed.

3. The combination of a helical cam, a toe thereon, a lever actuated bythe cam, a second lever connected to the first lever and actuated by thetoe, a drum, a contact arm, and

electrical connections, substantially as de scribed.

4:. The combination with an electrical circuit having means for openingand closing the same, of a cam, a lever engaging said cam and connectedto the means for opening and closing the circuit, a toe on the cam, anda second lever connected to the first lever and operating with the toe,substantially as described.

5. The combination With an electrical circuit having means for openingand closing the same, of a cam actuating said means, a toe on the cam,and a lever actuated by said too and connected with the means foropening and closing the circuit, substantially as described.

6. The combination With an electrical circuit and means for opening andclosing the same, of a helical cam having an abrupt shoulder at thecontiguous ends of its face, the said face being engaged with the meansfor opening and closing the circuit, a toe on the cam, and an anglelever having one end. pivotally connected to the means for opening andclosing the circuit and having the remaining end periodically engaged bythe toe. substantially as described.

7. The combination of a cam, an angle lever, a link connected to theangle lever, a pivoted contact arm connected with the link, acontinuously revolving drum engaging the contact arm, and electricalconnections, sulr stantially as described.

\VILLIE 'IIOSEA DAVIS. HUGH CIOERO CHRISTY.

\Vitnesses:

NELLIE FOSTER, CHAUNCEY J. Fox.

